Don Coppersmith, Uriel Feige, et al.
SIAM Journal on Discrete Mathematics
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Don Coppersmith, Uriel Feige, et al.
SIAM Journal on Discrete Mathematics
Ephraim Feig
Journal of Algorithms
Don Coppersmith, Shmuel Winograd
Journal of Symbolic Computation
Don Coppersmith, Igor Pak
Probability Theory and Related Fields